Air Products and Chemicals, Inc. designed, engineered, constructed, and made operational the Southern California Hydrogen Fill System. The Southern California Hydrogen Fill System is located at an Air Products and Chemicals, Inc. hydrogen production facility in Wilmington/ Carson, California in Los Angeles County. The hydrogen produced at the Southern California Hydrogen Fill System is distributed to stations and the stations fill fuel cell electric vehicles. This report describes two CEC agreements. The first agreement was for the upgrade of the hydrogen production system, built in 2014, and trailers that deliver gaseous hydrogen to the hydrogen refueling stations throughout California. Air Products and Chemicals, Inc. also designed, built, and commissioned hydrogen refueling stations, addressed in other CEC final reports. The second agreement was for automating the trailer fill process at the hydrogen production system. Installation of the automation process began late 2014 and became